ballantine



(No Model.) 2 Sheets-Sheet 1.

A. T. BALLANTINE.

VALVE FOR GOMPRESSORS FOR ICE MAKING APPARATUS.

No. 317,963. Patented May 19, 1885.

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(No Model.)

A. T. BALLANTINE.

VALVE FOR GOMPRESSORS FOR ICE MAKING APPARATUS.

Patented May 19, 1885.

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aura TATES PATENT anion.

ALEXANDER T. BALLANTINE, OF GENEVA, OHIO, ASSIGNOR TO ELLA B. BALLANTINE, OF SAME PLACE.

VALVE FOR COMPR E S SO RS FOR lCE MAKING APPARATUS.

SPECIFICATION forming part of Letters Patent 317,963, dated May 19, 1885.

/ Application filed June 28, 1884. (No model.) i I To aZZ whom it may concern.- v I Be it known that LALEXANDER T. BAL- LAN'IINE, a citizen of the United States, residing at Geneva, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Valves for Oompressors for Ice-Making Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to theaccom'panying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates, particularly, to certain improvements in the compressor for which Letters Patent No. 229,9l0 were issued to me on the 18th of July, 1880; and it consists in an improved construction of the inlet and outlet ports and the downwardly and upwardly opening valves of the gas cylinder, which forms a part of such compressor, all as will be more fully hereinafter described and claimed.

In the drawings, Figure 1 is a central Vertical section of the compressor. Fig. 2 is a similar section of the upper portion of the compressor, containing the inlet and outlet ports and valves of the gas-cylinder. Fig. 3 is an under side plan view of Fig. 2 with the gas-cylinder and perforated diaphragm removed. Fig. 4 is a partial section of the outlet-port, taken in the line a: a: of Fig. 3; and Fig. 5 is a similar section of the inlet-port, taken in the line 3 3 of Fig. 3.

Referring to the drawings, a is the steam cylinder, having but a single head. A casing, a, whose walls are cylindrical, is mounted on the cylinder at, and is slotted laterally to form guides a a for the blocks a a that are connected to the operating-shaft (not shown) by the rods a at Z2 is the piston, whose follower b is made integral with the piston b. This follower b is cylindrical in form and has the blocks a a secured to its upper end. The piston rod 0 slides through an elongated stuffing-box, (Z, provided with a gland, d, and is connected tioned, my improvements, which I will now proceed to particularly describe, being located at the top of the cylinder 6. I

, Referring more particularly to Fig. 2, f is a cylindrical cap, which is seated in a shouldered recess, f, in the top of cylinder 6. This cap f is provided with the interior circular shoulder, f", which fits within the cylinder e, and the cap is secured to cylinder by a series of bolts, f which pass'down through the circularopenings f provided with the shoulders f ,which receive the shouldered portionsf' of the bolts f 9 and g are two vertical passages in the cylindricalcapf, which open downwardly into the cylinder e,- and h is a diaphragnrsecured across the bottom of the cylindrical cap f and within the cylinder 6, and perforated at the bottom of the passages g and g.

g is a shoulder in the passage g, against which is secured the shouldered collar 70," and g is a similar shoulder in the passage 9, against which is secured a shouldered collar, k. The upper end of passage g is shouldered at g, adapting it to receive the cap Z, provided with the annular flange Z, which rests upon the shoulder g. Over this cap Z is placed another cap, m, provided with the hollow extension at. The base of this cap at is provided with an interior shoulder, m which rests upon the top of the annular flange Z of cap Z on an exterior shoulder, m which rests upon a similar shoulder, 9 in the top of the opening 9. The cap at is secured in position by a series of bolts, m".

n is another cap, provided with a hollow extension, 97/. annular shoulder, a which rests upon a corresponding shoulder, g, around the top of passage 9.

ois the inlet-valve in the passage 9, located below the collar 70, and having a follower, 0, extending upwardly through a close filling passage, Z,in the cap Z, and into the enlarged This cap a is provided with an lower, 1), extending upwardly within the chamber 10 in the cap n.

Surrounding the follower p and extending upwardly within an annular recess, n in the bottom of the cap a, is aspiral spring, pflwhose upper end rests against the top of the recess a and whose lower end rests against the upper face of the valve 19. Above the follower p and within the chamber 19 is the short spiral spring p.

Leading from the passage 9 are the ports 1 9', (shown in dotted lines in Figs. 1 and 2, and in full lines in Figs. 3 and 5,) preferably two in number, which pass downwardly to the bottom of the cap f,where it rests upon the cylindrical extension a, and there meet the passages rr (see Fig. 1) in the wall of the cylinder 6. Similar passages, s s and s 8, lead from the passage 9. At the junctions of these passages, which form the inlet and outlet ports, shoulders are formed in the contacting portions of the cap f and cylinder E, adapted for the reception of the collars t, which liepartly within the cap f and partly within the cylinder E.

At the base of the passage 9, and surrounding such passage, are a series of side chambers, (shown in dotted lines in Fig. 2 and in full lines in Fig. 3,) extending from the collar 70 to the diaphragm h.

The operation of the mechanism just described in detail is as follows: As the pistons b and e descend, the valve is drawn down against the action of the coiled spring 0 and the ammonia or other gas is drawn into the cylinder 6 from the source of supply, through the inlet-port r r, passage 9, and passages u, the elongated collar 0 preventing the valve 0 from striking the perforated diaphragm h, and the coiled spring returning the valve 0 to its normal position, against the collar 70, on the completion of the downward stroke of the pison e. As the piston e ascends, the gas in the cylinder 6 is forced up against the valve p, which rises against the action of the coiled spring 1 permitting the gas to pass through the passage and outlet-port s s to the receiver. The loose spring 1), above the follower p, prevents any jarring between the valve 19 and its follower p and the cap a; and the coiled spring 19 returns the valve p-to its normal position, against the collar 70, at the completion of the upward stroke of the piston e. The piston e is provided with the automatic valve 6 which allows any of the gas which may have escaped under the piston during the upstroke to be returned above the piston as it descends.

To provide against the escape of any of the ening-bolts f are secured.

gas through the joints where the caps f, m, and n are joined together and to the cylinder 6, the following arrangement of packing ismade: Before the cap is placed upon the part a a layer of soft metallic packing-such as leadis placed between the parts f and e at the points w, and when the parts are secured united by the bolts f. This packing is held in position by the shoulders f andf which prevent the packing from spreading, thereby insuring a perfectly tight joint. Lead packing is similarly placed where the passages r ands join the passages r and s to form the inlet and outlet ports, the packing being prevented from spreading by the collars t t and the shoulders f and f. This packing is similarly arranged at the points 20 w and tv w where the caps m and a are secured to the cap f, and at the points w w in the shouldered recesses f where the fast- In this manner all points where the escape of gas is possible are provided with effectual means for its prevention.

I claim- 1. In a gascompressor for ice-making apparatus, the combination, with the gas-cylinder 6 and piston e, perforated diaphragm 71, passages g and u, and inlet-ports r r, and passage g, and outlet-ports s s, of the springpressed valves 0 and p, substantially as shown and described.

2. In a gas-compressor for ice-making apparatus, in combination with the inlet-ports r r and the passage provided with the collar k and side passages, u, the valve 0, its follower 0, and the collar 0 and spring surrounding such follower, both located within the chamber 0 substantially as shown and described.

3. In a gas-compressor for ice-making apparatus, in combination with the outlet-ports s s and the passage 9, provided with the collar 7c, the valve p, its follower p, and the coiled spring 19 located between the valve 0 and the cap a, substantially as shown and described.

4. In a gas'compressor for ice-making apparatus, in combination with the outlet-ports s s and the passage provided with the collar 7c, the valve 19, its follower p, the coiled spring 10 located between the valve 0 and cap it, and the loose spring p in the chamber 19 substantially as shown and described.

5. In a gas-compressor for ice-making apparatus, the combination, with the cap f, concontaining the passages g, g, r, and s, the caps on and it, having the hollow extensions m and n, and the hollow cap Z, of the spring-pressed valves 0 0 and pp, substantially as shown and described.

6. In a gas-compressor for ice-making apparatus, as a means of preventing the escape of gas, the caps f, m, n, and Z, containing the valves and ports, and shouldered, as shown,

and having a suitable packing placed at the In testimony whereof I have signed my name shouldered points to, 20 20 and w, substanto this specification in the presence of two subtially as shown and described. scribing witnesses.-

7. In a gas-compressor for ice-making apv v 5 paratus, the cap f, provided with the passages ALEXANDER T. BALLANTINE.

1' and s, and cylinder 6, provided with the l passages 1" and s, shouldered at their joining Witnesses: edges, as shown, combined with the collars it, J. FRED. BoHN, and provided with a suitable packing at the OTTO HODDIOK. 10 points w, as and for the purpose stated. 

